REF3012AIDBZRG4

Overview

The REF3012AIDBZRG4 is a precision series voltage reference from Texas Instruments, delivering a fixed output of 1.25 V with an initial accuracy of 0.2%. It operates within a supply voltage range up to 5.5 V and draws a typical quiescent current of 42 uA, with a maximum of 50 uA. The device features a temperature coefficient of 75 ppm/°C and supports a maximum shunt current of 25 mA. It is housed in a compact SOT-23-3 package and functions reliably across an extended industrial temperature range from -40°C to +125°C.

Feature Summary

• Provides stable 1.25 V reference output with high initial accuracy
• Operates with ultra-low power consumption suitable for battery applications
• Maintains performance stability across wide industrial temperature variations
• Utilizes compact surface-mount packaging for space-constrained designs

Applications

• Portable instrumentation requiring low power operation
• Battery-powered measurement systems
• Data acquisition systems needing precise voltage references
• Industrial process control loops

Procurement Notes

Verify the complete part number including the G4 suffix to ensure compliance with RoHS directives and lead-free manufacturing standards. Confirm the specific tape-and-reel quantity matches your assembly requirements. Ensure the ordering suffix corresponds to the desired packaging format. Cross-reference the manufacturer datasheet for any recent product change notifications or lifecycle status updates before finalizing procurement decisions.

Selection Notes

Select this component when a fixed 1.25 V reference is required with strict accuracy constraints. The low quiescent current makes it ideal for energy-efficient designs compared to higher current alternatives. Consider the 75 ppm/°C drift if operating in environments with significant thermal fluctuations. The SOT-23-3 package limits thermal dissipation, so verify PCB layout guidelines for optimal heat management during continuous operation.

Part Context

This device belongs to the REF30xx family of precision voltage references from Texas Instruments. It shares architectural similarities with other members like the REF3018 and REF3020, differing primarily in output voltage. The G4 suffix indicates a green/RoHS-compliant variant. It serves as a foundational component in analog signal chains where reference stability directly impacts system resolution and measurement fidelity.

Replacement Considerations

Direct substitutes include REF3012AIDBZR for identical electrical specifications without the G4 suffix. For lower drift requirements, consider the REF3312 series. Adjustable alternatives like TL431 offer flexibility but require external resistors. Verify pinout compatibility and thermal characteristics when swapping between different package types or manufacturers.